get_next_line_utils.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   get_next_line_utils.c                              :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: mmoumni <mmoumni@student.42.fr>            +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/11/14 20:13:34 by mmoumni           #+#    #+#             */
/*   Updated: 2022/01/02 17:10:08 by mmoumni          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "get_next_line.h"

int	get_ft_strlen(char	*str)
{
	int	i;

	if (!str)
		return (0);
	i = 0;
	while (str[i])
		i++;
	return (i);
}

char	*get_ft_strdup(char *s1)
{
	size_t	i;
	size_t	len;
	char	*str;

	len = get_ft_strlen(s1);
	i = 0;
	str = (char *)malloc(len + 1);
	if (!str)
		return (NULL);
	while (i < len)
	{
		str[i] = s1[i];
		i++;
	}
	str[i] = '\0';
	return (str);
}

char	*get_ft_strjoin(char *s1, char *s2)
{
	size_t	len;
	char	*join;
	size_t	i;
	size_t	j;
	size_t	k;

	if (!s1)
		s1 = get_ft_strdup("");
	len = get_ft_strlen(s1) + get_ft_strlen(s2);
	join = (char *)malloc(sizeof(char) * (len + 1));
	if (!join)
		return (NULL);
	i = 0;
	j = 0;
	k = 0;
	while (s1[k])
		join[i++] = s1[k++];
	k = 0;
	while (s2[k])
		join[i++] = s2[k++];
	join[i] = '\0';
	free(s1);
	return (join);
}

char	*get_ft_strchr(char *s, int c)
{
	int	i;

	i = 0;
	if (!s)
		return (NULL);
	while (s[i])
	{
		if (s[i] == (char)c)
			return ((char *)(s + i));
		i++;
	}
	if (s[i] == c)
		return ((char *)(s + i));
	return (NULL);
}